Aluzinc steel coils
Galvalume products ( GL) use cold rolled steel sheets with various strengths and thicknesses as the raw materials and are coated with aluminum (Al 55%), zinc (Zn 43.5%) and silicon (Si 1.5%) alloy. It possesses excellent anti-corrosion properties. Product Features: Derived from hot-dip aluminum galvanization and hot-dip zinc galvanization technology, Galvalume products possess excellent properties of both products, i.e. the exceptional anti-corrosion and anti-oxidation properties of hot-dip aluminum galvanization, and superior electric-chemical properties of hot-dip zinc galvanization, which make Galvalume sheets less prone to rust and corrosion at the edge and on the scratched surface.
What are the Characteristics of the Galvalume steel coil?
Because it is produced through applying Al-Zn coat on both faces by hot dip process. It enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn.
>>Machinability: It can satisfy the processing requirements of rolling, coiling and others processes alike.
>>Thermal resistance: Common HDG steel plate normally works under 230℃, and has its color changed at 250℃, however, Galvalume steel plate can sustain the environment at 315℃ for long time.
>>High reflectivity: Reflection ability of heat and light is twice as much as those of hot-dip zinc steel sheet, and its reflectivity is more than 0.70, which is an ideal construction materials of saving energy.
Zinc Coated：With the cold-rolled steel of different strengths and thickness as substrate. it is produced by applying the zine coat on both faces by hot-dip process.
Metal Base:Cold rolled steel coil
Thickness: 0.12mm~1.2mm
Width:≤1250mm
Zinc Coating: 40~275gram/㎡
Surface Treatment:Passivation/oiling
Spangle Types: Small/ regular/ big spangle
Weight Varies By Profile
Our GALVALUME steel coils feature a revolutionary 55% aluminum-zinc alloy coating (AZ150) that delivers 2-4 times longer lifespan than traditional galvanized steel. The unique metallurgical bond creates a protective barrier that resists rust, heat, and abrasion – making it ideal for roofing, siding, and industrial applications.
Widely used in construction, light industry and other industries.
Our MOQ is usually 1x20ft container.Free sample is ok but need pay the courier charge.Charge can be dedubt in future orders.
Commercial
Industrial
Advanced Protection: Self-healing properties protect cut edges and scratches.Heat Resistance: Withstands temperatures up to 315°C (600°F) without discoloration.Eco-Friendly: 100% recyclable with lower carbon footprint than traditional materials.Proven Performance: 30+ year track record in harsh coastal and industrial environments
| Item | Specification |
|---|---|
| Product Name | Galvalume Steel Coil |
| Other Names | GL Coil / Aluzinc Steel Coil |
| Base Material | Cold Rolled Steel |
| Thickness | 0.12mm – 2.0mm |
| Width | 600mm – 1250mm |
| Coil Weight | 3MT – 10MT |
| Inner Diameter | 508mm / 610mm |
| Coating Type | 55% Aluminum-Zinc Alloy Coating |
| AZ Coating | AZ30 / AZ50 / AZ70 / AZ100 / AZ150 |
| Surface Treatment | Chromated / Oiled / Dry / Anti-fingerprint |
| Spangle Type | Regular Spangle / Small Spangle / Zero Spangle |
| Steel Grade | DX51D / DX52D / SGLCC / ASTM A792 |
| Standard | ASTM / JIS / EN / GB |
| Tensile Strength | 270MPa – 500MPa |
| Yield Strength | ≥ 240MPa |
| Surface Finish | Bright / Matte / Anti-fingerprint |
| Application | Roofing Sheets, Wall Cladding, Sandwich Panels, Home Appliances, Industrial Fabrication |
| Packaging | Standard Export Seaworthy Packing |
| OEM/ODM | Supported |
Galvalume steel coils can provide 2–6 times better corrosion resistance than ordinary galvanized steel coils.
The aluminum-rich coating reflects solar heat effectively and helps reduce indoor temperatures.
Galvalume roofing materials can last more than 20–30 years under proper conditions.
Suitable for:
| Feature | Galvalume Steel Coil | Galvanized Steel Coil |
|---|---|---|
| Coating Composition | 55% Aluminum-Zinc Alloy Coating | Pure Zinc Coating |
| Corrosion Resistance | Excellent corrosion resistance in coastal and humid environments | Standard corrosion protection |
| Heat Resistance | Superior heat resistance up to 315°C | Lower heat resistance |
| Service Life | Longer outdoor service life | Moderate lifespan |
| Heat Reflectivity | High solar reflectivity and energy efficiency | Lower reflectivity |
| Surface Appearance | Smooth metallic finish with spangle options | Traditional zinc spangle surface |
| Application | Roofing sheets, wall cladding, sandwich panels, PPGL substrate | General construction and industrial use |
| Cost Performance | Better long-term durability and value | Lower initial cost |
| Recommended Environment | Coastal areas, industrial zones, tropical climates | Mild climate environments |
Widely used for industrial roofing sheets, corrugated roofing panels, and stone-coated roofing substrates.
Suitable for:
Used in:
Applicable for:
To reduce transportation damage during sea shipment, we provide export-grade packaging solutions.
We support:
As a professional China GL coil manufacturer, ROOFGLORY implements strict quality inspection during production.
All products can be supplied with:
Exporting to:
We support customized:
Stable raw material supply chain and efficient production scheduling ensure reliable lead times for bulk orders.
GI coils use pure zinc coating, while GL coils use aluminum-zinc alloy coating with better corrosion resistance and heat reflectivity.
AZ150 refers to the aluminum-zinc coating weight of 150g/m².
Yes. Galvalume coils are widely used as the substrate for PPGL color coated steel coils.
Yes. GL steel coils perform much better than galvanized steel in coastal and humid environments.
Usually 1x20GP container, but mixed specifications are negotiable.
Yes, free samples are available. Courier charges are collected initially and can be deducted from future orders.
We appreciate your interest in our factory. If you have any questions or require further information about our customizable Galvalume coil colors or any other aspect of our products and services, please do not hesitate to contact us. We look forward to the opportunity of working with you and delivering exceptional results.
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